TITLE:
A New Factorized Backprojection Algorithm for Stripmap Synthetic Aperture Radar
AUTHORS:
Kyra Moon, David G. Long
KEYWORDS:
Backprojection; Windows; Synthetic Aperture Radar (SAR)
JOURNAL NAME:
Positioning,
Vol.4 No.1,
February
27,
2013
ABSTRACT: Factorized
backprojection is a processing algorithm for reconstructing images from data
collected by synthetic aperture radar (SAR) systems. Factorized backprojection
requires less computation than conventional time-domain backprojection with minimal loss in accuracy for straight-line
motion. However, its implementation is not as straightforward as direct
backprojection. This paper provides a new, easily parallelizable formulation of
factorized backprojection designed for stripmap SAR data
that includes a method of implementing an azimuth window as part of the
factorized backprojection algorithm. We compare the performance of windowed
factorized backprojection to direct backprojection for simulated and actual SAR
data.